SOUTH DEERFIELD - It looked like the number 13 was going to be very unlucky for the Frontier Regional baseball team on Saturday.

Westfield Vocational scored one run in the top of the 13th inning to take a lead on the Red Hawks in the first-round game of the Western Massachusetts Division 3 Tournament.

Tiger pitcher Lucas Cimmino (jersey number 13) had held defending western Massachusetts champion Frontier at bay through 12 innings and needed only three outs in the bottom of the 13th to send the 10th-seeded Tigers to the upset win over the seventh-seeded Red Hawks.

But things changed in a hurry as Frontier capitalized on an error by Cimmino in the bottom of the 13th and Erik Abramson roped a two-run double to plate the winning runs as the Red Hawks staved off elimination with a 5-4 victory in a three hour, 45 minute classic at Valiton Field.

Frontier (11-10) travels to Sheffield to take on second-seeded Mount Everett (16-4) at 4 p.m. today in the quarterfinals. The Eagles defeated No. 15 Lenox 7-1 in a first-round game Friday.

Westfield Vocational ended its season at 14-5.

Abramson (two hits, three RBIs) tied the game at 3-3 in the bottom of the fourth inning with an RBI single to plate Robbie Sjodahl and from there the teams played eight scoreless innings until the Tigers got one run in the top of the 13th.

James Bushy led off the inning for Westfield Vocational with a ground-rule double to deep left field, and scored on another double by Josh Jimenez left-center.

Red Hawks pitcher Sjodahl escaped any further trouble by getting the next three outs.

Frontier took advantage in the bottom of the inning when Ashton Lutenegger (three hits, two runs) led off with an infield hit off Cimmino, who had struck out 18 in the first 12 innings. Stephen Wojtowicz followed with a come-backer to Cimmino that looked like a double-play ball, but the Tiger pitcher threw to the right of second base and both runners were safe on the error.

Gary Grandonico (three hits, two runs, one RBI) followed with a bunt down the first-base line that Cimmino bobbled, allowing Grandonico to reach safely and load the bases. That set up Abramson, who got ahead 2-1 on Cimmino and roped the next pitch over the right fielder's head to plate Lutenegger and Wojtowicz and send the defending Division 3 champions on to the quarterfinals.

That made a winner out of Sjodahl, who pitched six innings in relief and threw 87 pitches, meaning he will no longer be available for the start today.

Sjodahl struck out seven and walked one in relief of Grandonico, who fired the first seven innings, striking out 10 and walking six.

Either Stephen Wojtowicz or Dan White will start for the red hawks at Mount Everett, Frontier coach Aaron Campbell said.